<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.DriverManager" %><%--
  Created by IntelliJ IDEA.
  User: hasee
  Date: 2018/3/20
  Time: 15:47
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title></title>

    <style type="text/css">

        table {
            border: 1px solid #000;
            border-collapse: collapse;
        }

        td, th {
            border: 1px solid #000;
            padding: 10px;
        }

    </style>

</head>
<body>
<h1>这是一个jsp文件</h1>

<%
    out.write("hello,world!");

%>
<table>

    <thead>
    <tr>

        <th>编号</th>
        <th>用户名</th>
        <th>密码</th>
        <th>删除</th>
        <th>更新</th>

    </tr>
    </thead>

    <tbody>

    <%
        class User {
            int id;
            String name;
            String password;


            //art + insert
            public User(int id, String name, String password) {
                this.id = id;
                this.name = name;
                this.password = password;
            }
        }

        List<User> list = new ArrayList<User>();
//            list.add(new User(1, "yang", "123456"));
//            list.add(new User(2, "xiao", "123456"));
//            list.add(new User(3, "cao", "123456"));
//            list.add(new User(4, "li", "123456"));

        //3 + 1
        Connection connection = null;
        Statement statement = null;
        ResultSet resultSet = null;

        String sql = "select * from t_users";

        Class.forName("com.mysql.jdbc.Driver");

        connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/sctu_javaweb_2018?serverTimezone = UTC",
                "root",
                "123456"
        );

        statement = connection.createStatement();

        resultSet = statement.executeQuery(sql);

        while (resultSet.next()) {

            int id = resultSet.getInt(1);
            String username = resultSet.getString(2);
            String password = resultSet.getString(3);

            User user = new User(id, username, password);
            list.add(user);

        }
        resultSet.close();
        statement.close();
        connection.close();


        for (User user : list) {

            out.write("<tr><td>" + user.id + "</td><td>" + user.name + "</td><td>" + user.password + "</td>"
                    + "<td><a href='deleteUserHandler.jsp?id=" + user.id + "'>删除</a></td>"
                    + "<td><a href='updateUser.jsp?id=" + user.id + "&username=" + user.name + "&password=" + user.password + "'>更新</a></td></tr>");

        }


//            for (int i = 0; i < 10; i++) {
//                //alt + shift + 向上箭头        向上移动一行
//                //ctrl + alt + L               整理代码格式
//                out.write("<tr><td>1</td><td>john</td><td>123</td></tr>");
//            }
    %>



    </tbody>

    <a href="addUser.jsp">添加</a>

</table>

<!--
JSP指令:
page
include
taglib

JSP动作元素:
jsp:include
jsp:param
-->

<!--静态信息-->
<%--<%@include file="footer.jsp"%>--%>

<!--jsp前缀 动态信息-->
<jsp:include page="footer.jsp">
    <jsp:param name="year" value="2018" />
</jsp:include>


</body>
</html>
